aheinecke@404: /* Copyright (C) 2014 by Bundesamt für Sicherheit in der Informationstechnik
aheinecke@404:  * Software engineering by Intevation GmbH
aheinecke@404:  *
aheinecke@404:  * This file is Free Software under the GNU GPL (v>=2)
aheinecke@404:  * and comes with ABSOLUTELY NO WARRANTY!
aheinecke@404:  * See LICENSE.txt for details.
aheinecke@404:  */
aheinecke@252: #include "logging.h"
aheinecke@252: #include "strhelp.h"
aheinecke@252: 
aheinecke@252: #include <stdio.h>
andre@615: #include <stdarg.h>
andre@615: #include <stdbool.h>
andre@615: 
andre@615: #include <strhelp.h>
aheinecke@252: 
aheinecke@252: #ifdef WIN32
andre@615: # include <windows.h>
andre@615: #else
andre@615: # include <syslog.h>
andre@615: #endif
andre@615: 
andre@615: 
andre@615: #ifdef WIN32
andre@615: static void
andre@615: win_log(const char *format, va_list ap, bool error)
andre@615: {
andre@616:   HANDLE log_src = NULL,
andre@616:          process_token = NULL;
andre@615:   wchar_t *wmsg = NULL;
andre@615:   BOOL failure = TRUE;
andre@615:   WORD type = 0,
andre@615:        category = 0;
andre@615:   char buffer[MAX_LOG+1];
andre@616:   PTOKEN_USER user_struct = NULL;
andre@616:   PSID user_sid = NULL;
andre@615: 
andre@615:   vsnprintf (buffer, MAX_LOG, format, ap);
andre@615:   buffer[MAX_LOG] = '\0';
andre@615: 
andre@615:   log_src = RegisterEventSourceA (NULL, LOG_NAME);
andre@615: 
andre@615:   if (log_src == NULL)
andre@615:     {
andre@615:       PRINTLASTERROR ("Failed to open log source.");
andre@615:       return;
andre@615:     }
andre@615: 
andre@615:   if (error)
andre@615:     {
andre@615:       type = EVENTLOG_ERROR_TYPE;
andre@615:     }
andre@615:   else
andre@615:     {
andre@615:       type = EVENTLOG_INFORMATION_TYPE;
andre@615:     }
andre@615: 
andre@615:   wmsg = utf8_to_wchar (buffer, strlen(buffer));
andre@615:   if (wmsg == NULL)
andre@615:     {
andre@615:       ERRORPRINTF ("Failed to convert log message to utf-16");
andre@615:       goto done;
andre@615:     }
andre@615: 
andre@616:   /* Get the current user sid for logging */
andre@616: 
andre@616:   OpenProcessToken (GetCurrentProcess(), TOKEN_READ, &process_token);
andre@616:   if (process_token)
andre@616:     {
andre@616:       DWORD size = 0;
andre@616: 
andre@616:       // check how much space is needed
andre@616:       GetTokenInformation (process_token, TokenUser, NULL, 0, &size);
andre@616:       if (ERROR_INSUFFICIENT_BUFFER == GetLastError())
andre@616:         {
andre@616:           user_struct = xmalloc (size);
andre@616:           GetTokenInformation (process_token, TokenUser, user_struct, size, &size);
andre@616:           user_sid = user_struct->User.Sid;
andre@616:         }
andre@616:     }
andre@616: 
andre@616: 
andre@615:   failure = ReportEventW (log_src,
andre@615:                           type,
andre@615:                           category,
andre@615:                           0,
andre@616:                           user_sid,
andre@615:                           1,
andre@615:                           0,
andre@615:                           (const WCHAR **) &wmsg,
andre@615:                           NULL);
andre@615:   if (failure)
andre@615:     {
andre@615:       PRINTLASTERROR ("Failed to report event.");
andre@615:     }
andre@615: 
andre@615: done:
andre@616:   if (process_token)
andre@616:     {
andre@616:       CloseHandle(process_token);
andre@616:     }
andre@616:   xfree (user_struct);
andre@615:   xfree (wmsg);
andre@615: 
andre@615:   if (!DeregisterEventSource (log_src))
andre@615:     {
andre@615:       PRINTLASTERROR ("Failed to close log source.");
andre@615:     }
andre@615:   return;
andre@615: }
andre@615: 
aheinecke@252: char *
aheinecke@252: getLastErrorMsg()
aheinecke@252: {
aheinecke@252:   LPWSTR bufPtr = NULL;
aheinecke@252:   DWORD err = GetLastError();
aheinecke@252:   char *retval = NULL;
aheinecke@252:   FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
aheinecke@252:                   FORMAT_MESSAGE_FROM_SYSTEM |
aheinecke@252:                   FORMAT_MESSAGE_IGNORE_INSERTS,
aheinecke@252:                   NULL, err, 0, (LPWSTR) &bufPtr, 0, NULL);
aheinecke@252:   if (!bufPtr)
aheinecke@252:     {
aheinecke@252:       HMODULE hWinhttp = GetModuleHandleW (L"crypt32");
aheinecke@252:       if (hWinhttp)
aheinecke@252:         {
aheinecke@252:           FormatMessageW (FORMAT_MESSAGE_ALLOCATE_BUFFER |
aheinecke@252:                           FORMAT_MESSAGE_FROM_HMODULE |
aheinecke@252:                           FORMAT_MESSAGE_IGNORE_INSERTS,
aheinecke@252:                           hWinhttp, HRESULT_CODE (err), 0,
aheinecke@252:                           (LPWSTR) &bufPtr, 0, NULL);
aheinecke@252:         }
aheinecke@252:     }
aheinecke@252:   if (!bufPtr) {
aheinecke@252:     fprintf (stderr, "Error getting last error for code: %lx \n", err);
aheinecke@252:     return NULL;
aheinecke@252:   }
aheinecke@252: 
aheinecke@252:   retval = wchar_to_utf8(bufPtr, wcslen(bufPtr));
aheinecke@252:   LocalFree (bufPtr);
aheinecke@252: 
aheinecke@252:   return retval;
aheinecke@252: }
aheinecke@252: 
andre@615: #else /* WIN32 */
andre@615: 
andre@615: 
andre@615: static void
andre@615: linux_log (const char *format, va_list ap, bool error)
andre@615: {
andre@615:   openlog (LOG_NAME, LOG_CONS | LOG_PID | LOG_NDELAY, LOG_USER);
andre@615:   vsyslog ( error ? LOG_ERR : LOG_INFO, format, ap);
andre@615: }
andre@615: 
andre@615: #endif /* WIN32 */
andre@615: 
andre@615: void
andre@615: syslog_info_printf(const char *format, ...)
andre@615: {
andre@615:   va_list args;
andre@615:   va_start (args, format);
andre@615: #ifdef WIN32
andre@615:   win_log (format, args, false);
andre@615: #else
andre@615:   linux_log (format, args, false);
aheinecke@252: #endif
andre@615:   va_end (args);
andre@615: }
andre@615: 
andre@615: void
andre@615: syslog_error_printf(const char *format, ...)
andre@615: {
andre@615:   va_list args;
andre@615:   va_start (args, format);
andre@615: #ifdef WIN32
andre@615:   win_log (format, args, true);
andre@615: #else
andre@615:   linux_log (format, args, true);
andre@615: #endif
andre@615:   va_end (args);
andre@615: }